<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>天气案例</title>
    <script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>

    <div id="root">
        <h2>天气很{{info}}</h2>
        <!-- click中的可以写methods中的语句，但不建议，当代码很长时不好用 -->
        <button @click="isHot = !isHot">切换天气</button>
    </div>

    <script type="text/javascript">
        new Vue({
            el: '#root',
            data: {
                isHot: true
            },
            computed: {
                info() {
                    return this.isHot ? '炎热' : '寒冷'
                }
            },
            methods: {
            //     changeWeather() {
            //         this.isHot = !this.isHot
            //     }
            },
        })
    </script>

</body>

</html>